Sponge Aquarium Filter Basics
Sponge Aquarium Filters are very simple filters that consist of a sponge with a tube that is connected to a small air pump. This filter typically sits on the bottom of the aquarium with its lift tube upright. Air is forced into the filter tube with an external air pump, that is connected with airline tubing; the escaping air draws water through the sponge and up the tube. This simple process provides both mechanical and biological filtration from the water flowing through the sponge.
Sponge filters are especially well suited for breeding tanks, where small fish or shrimp need to be protected from filtration intakes, as well as hospital tanks that may need to be set up quickly.
Interested in other types of aquarium filters? Check them out here.